New FPGA-based and inline-capable measuring method for the identification of magnetic losses in electrical steel

The identification and characterization of magnetic losses in electrical steel is the basis for the improvement of current drive technologies and quality assurance in the manufacturing processes. The enormous demands on drives regarding high frequencies, non-sinusoidal waveforms and polarizations in the area of the saturation flux density yield increased requirements for suitable testing devices. Thus, it is necessary to develop a new measuring system that combines the requirements of series production and measurement precision. As a second step it is possible to establish a measurement strategy that differ and separate the influence on the magnetic losses of every single production step inside the manufacturing process. For this application a fast, flexible and high performant modular measuring device is built up and is described in this paper.